Method and device for removing harmful gas in hot water system
A hot water system and harmful gas technology, which is applied in the field of removing harmful gases in the hot water system, can solve the problems of safety accidents, large accident impact, damage to the normal operation of the hot water system, etc., and achieve the effect of reducing project investment
Inactive Publication Date: 2021-02-09
CHINA PETROLEUM & CHEM CORP +2
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Problems solved by technology
In petrochemical plants, the working fluids that generate and use low-temperature heat are often flammable, explosive, and toxic media, and these media cannot be directly discharged to the atmosphere. When exchanging heat, there will be more or less these harmful media. When the working pressure of these media is higher than the working pressure of hot water and the heat exchange equipment fails, it will destroy the normal operation of the hot water system, and in severe cases, these harmful gases will be caused. Released into the environment causing safety accidents
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[0031] like figure 1 As shown, a schematic diagram of a device for removing harmful gases in a hot water system, including a container 1, an exhaust pipe 2, an exhaust valve connecting pipe 3, a safety valve connecting pipe 4, a heat exchange tube bundle 11 and a water sealing system, figure 1 The shown device for removing harmful gases in the hot water system also includes a baffle 18 and a steel wire mesh 17. The exhaust pipe 2 is arranged on the top of the container 1, and a check valve 14 and a cut-off valve are sequentially arranged along the exhaust direction of the exhaust pipe 2. The valve 13, the exhaust valve connecting pipe 3, and the safety valve connecting pipe 4 are sequentially arranged on the side of the upper middle part of the container 1 from top to bottom, the heat exchange tube bundle 11 is arranged in the lower part of the container 1, and the water sealing system is arranged in the lower part of the container 1. The water sealing system is composed of tw...
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Abstract
The invention discloses a method and a device for removing harmful gas in a hot water system so as to enable a gas-water mixture discharged by the hot water system to meet the safe discharge requirement under normal operation and accident conditions of a petrochemical plant. The method comprises the following steps: when the hot water system works normally, a harmful gas-containing gas-water mixture accumulated in the operation of the hot water system is enabled to enter the middle upper part of a container through an exhaust valve connecting pipe, and after an overpressure safety valve of thehot water system acts, the discharged gas-water mixture is enabled to enter the middle upper part of the container through a safety valve connecting pipe; gas and water are separated from the gas-water mixture entering the container in the container, the separated gas is enabled to upwards enter the exhaust pipe to be exhausted into a harmful gas closed exhaust system, and the separated water isenabled to fall to the lower portion of the container, is cooled, then is enabled to enter a water seal system and is exhausted from an outlet of the water seal system.
Description
technical field [0001] The invention belongs to the field of safety and environmental protection, and relates to a method and a device for removing harmful gas in a hot water system. Background technique [0002] There is a large amount of excess low-temperature heat in petrochemical plants. In order to save energy, petrochemical plants often use hot water as a working medium to establish a plant-wide hot water system to recover low-temperature waste heat from various places and send it to where it is needed. In petrochemical plants, the working fluids that generate and use low-temperature heat are often flammable, explosive, and toxic media, and these media cannot be directly discharged to the atmosphere. When exchanging heat, there will be more or less these harmful media. When the working pressure of these media is higher than the working pressure of hot water and the heat exchange equipment fails, it will destroy the normal operation of the hot water system, and in sever...
Claims
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IPC IPC(8): C02F1/20
CPCC02F1/20
Inventor 杨宏伟
Owner CHINA PETROLEUM & CHEM CORP